Revered in TCM as a "cooling tonic," this extract is derived from Henan’s Rehmannia glutinosa—grown in nutrient-dense soil. Its iridoid glycosides support liver detoxification and blood purification, making it a staple in traditional herbal blends and modern dietary supplements. Popular in Southeast Asia and Western herbal medicine, it caters to consumers seeking natural detox solutions. 

China’s status as the primary producer (90% global supply) ensures authenticity, and its versatility will keep it in demand for holistic wellness products.